There is no difference between the production of a toothbrush and a wall brush, but because it cannot be made too coarsely.

The previous production method can no longer be used, and Wang Tian can only use the method of tying threads to fix pig hair.

He used a knife to cut out a bunch of bamboo chips in the shape of toothbrush handles, and carefully smoothed the edges and corners of the bamboo pieces to prevent the sharp bamboo edges from cutting his mouth.

The handle of the toothbrush is also large and small, and since it is done, of course, it is necessary to distinguish children's toothbrushes and adult toothbrushes.

This work took him three hours, before he took out the fish bladders that he had previously killed and dried, and planned to boil them into fish maw glue.

This is a necessary material for making a bow and arrow, to be precise, it should be the material needed to make a composite bow, a bow and arrow made of bamboo directly bent, that is a children's toy.

After the wall was built, there were no long-range attack weapons, and it was not a problem to stand passively and be beaten.

Fish maw glue is a commonly used adhesive in ancient Chinese wood production, its viscosity is extremely large, it will freeze at room temperature and has a strong viscosity, and when heated, it will return to a solution and lose its viscosity.

This feature makes the mortise and tenon joints of ancient hardwood furniture bonded with animal glue, which is also easy to maintain. However, hardwood furniture also has the weakness of being afraid of water and heat.

This feature must also be taken into account when used to make bows and arrows.

The production process of fish maw glue is more cumbersome: first, the swim bladder should be torn longitudinally into thin strips by hand, soaked in cold water for several days, and the water should be changed frequently every day to prevent the swim bladder from spoiling.

After soaking, put the swim bladder in the pot and smash it thousands of times without interruption, smash and smash the swim bladder until it becomes a milky white colloid, and stir for about 4 hours until the required viscosity. And with the knocking of the wooden stick, it can be stretched to more than a foot long before the swim bladder is smashed (called "smashing the swim bladder'".

Because the fish maw is very viscous after being crushed into a pulp, the strength required in the later stage of smashing the swim bladder is very large, so there is a good saying since ancient times: "A good man can't smash three or two bladders a day."

After the slurry is formed, it can be put into a container to heat and boil, the temperature is about 80 °C, not boiled, and boiled for 12-18 hours until it changes color.

In the future, it needs to be heated and dissolved with water, and it can be taken while it is hot.

This is the glue that Wang Tian was able to get in the primitive era. Later, you will need to build a house, make furniture, etc.

Therefore, Wang Tian had people collect larger swim bladders very early. The best fish bladder gel is the bladder of the large yellow croaker, but other swim bladders can be used as well.

In fact, fresh fish maw can also be made, but the gelatinization is slightly worse. Wang Tian had been trained in this area when he was in the army.

As a scout, when you run out of ammunition, cold weapons become the only choice. And accustomed to long-range attacks, bows and arrows in cold weapons are naturally the best weapons.

The swim bladder has been soaked, and the beating after that is not what Wang Tian can do now. After this he continued to make his toothbrush.

The key that he sharpened first was also loaded onto a hand drill, which was used to drill a tiny hole like a toothbrush.

Thinking of this, he couldn't help but feel a little hot in his cheeks, not that his slap really hurt at the beginning.

He subconsciously looked at it, and when he found that Ling'er's little girl was boiling salt with the women comrades not far away, he couldn't help but breathe a sigh of relief.

It's better not to let her see this kind of humiliating thing. Wang Tian suddenly found that he was also a little afraid of this little girl.

Originally, he planned to work on the assembly line and drill all the toothbrush holes at once.

In the end, he chose to make one or two samples first.

The ore of 500 catties of table salt has been boiled almost up. The time gained should be enough for the tribe to use it for a while.

To avoid making the cave messy because of mining stones. After storing 1,000 catties of raw ore again, Wang Tian asked people to restore the cave to its original state.

He is planning to be a shopkeeper again, and let the engineer repeat a single job, which is a waste and torture! Wang Tian comforted himself.

Although after graduating from college and being discharged from the army, he did not become an honorable police uncle, nor did he find a professional counterpart to work as a development engineer.

After retiring from the army, Wang Tian became a glorious North Drifter. Blind to what he had learned earlier.

He was just a little tired of these two jobs at the time, and wanted to play more while he was young. Since he was a child, his life experience has not made him have much sense of responsibility for his life.

But now he regrets that he didn't work in design earlier.

The difference between theoretical and practical work experience is too big, and if he had practical experience in design, maybe he wouldn't have such a headache now.

Of course, this does not include making a toothbrush.

Soon the holes in the two toothbrushes were drilled, and the next step was to turn the sewing needle into a crochet needle.

Without a vice, Wang Tian didn't dare to directly grab the sewing needle and heat it on the fire.

Tie it tightly with a branch, put the tip of the needle into the fire and heat it red, then bend the tip of the needle first, use a stone hammer, and carefully hit it successfully.

He also sharpened the front end of the crochet bend, so that it could be used when sewing clothes, and it would also be used to make shoe soles in the future, and it could also be used as a fishing hook with a rope.

It's not a waste to kill so much, Wang Tian even took entertainment into account.

After installing the handle, use the twisted string to tie the pig hair tightly to the fine hole of the toothbrush.

With the small scissors on the saber, trim the pig hair on the toothbrush, and the two original versions of the toothbrush are completed.

Find a clay pot and fill it with water, throw two toothbrushes into the clay pot together, and use boiling water to eliminate the poison.

He planned to give Wu a hand, so that the two great divine sticks of the Tianlong tribe would use one artifact earlier than the rest of the tribe.

It's not wrong to care for the old and the young. Wang Tian once again made excuses for himself to do the thing of throwing off the shopkeeper.

For the job of making a toothbrush, he plans to find a carpenter to do it.

As the CEO of Tianlong Tribe and HR.Dept. Manger's human resources manager, it is his job to discover and promote talents.

What caught his blue eyes was Liu Bei, one of the two assistants who had been accompanying the sunspot to make pottery.

This guy has good physical fitness, his hands are over his knees, and he doesn't need to bend his waist when he uses a planer in the future, because his hands are long enough.

There is carpenter Liu Bei in the front, and Uncle Liu Huang, a big-eared thief who weaves mats, should have given full play to their own characteristics.

As for Kuroko's other assistant _ big hand, that's a good material for striking iron, the reason goes without saying, the big hand is stable.

He was about to dig out the sunspot from the kiln with a large vat of salt, but at this time, he never thought that in the near future, he would become a light pole commander.

In order to make this large tank of salt before sunset, according to the requirements of the Son of Heaven, he did only one thing for the whole afternoon:

Pulled the wind all afternoon!